When does combat damage get healed?

According to the Riftbound rules and official FAQs, combat damage is healed during the Combat Cleanup step.

Here are the key details regarding this process:

• When it happens: Combat cleanup occurs immediately after the combat damage has been dealt and the combat damage step has concluded (Rule 461.1.a).
• What it heals: Healing during combat cleanup is global. It clears all marked damage from every unit on the board, including units that were not involved in the combat (RiftJudge FAQ ID 7750, 8993).
• Non-combat scenarios: Combat cleanup (and therefore the associated healing) still occurs even if combat damage is not dealt—for example, if all units are removed from the battlefield by spells before the damage step occurs (RiftJudge FAQ ID 3522, 4531).
• Non-combat showdowns: Healing does not occur after non-combat (uncontested) showdowns. It only happens after a combat showdown or at the end of the turn (RiftJudge FAQ ID 9016, 8993).

In summary, combat damage is cleared from all units at the end of every combat showdown during the Combat Cleanup step.